On 04/22/2011 12:42 PM, Iñaki Baz Castillo wrote:
> Hi, an outbound proxy receives an initial request with RURI domain
> "invalid-domain.net" (no explicit port neither ;transport param in the
> RURI). The proxy then performs all the steps in RFC 3263 section 4.
> Let's suppose the following two cases:
>
> a) The domain "invalid-domain.net" doesn't exist.
>
> b) The domain "invalid-domain.net" exists but has no NAPTR, SRV, A
> neither AAAA record.
>
> Which should be the response code of the proxy in a) and b) cases? I
> don't expect 404 si a good choice as just the proxy responsible of the
> target domain should reply it. So maybe 503 is better (always
> 503....). Any other suggestion? any specification defining it?
I suspect that any other SIP server in the world that tries to
look up "invalid-domain.net" will reach the same conclusion
as every other SIP server before it.
In that case, regardless of (a) or (b), a 604 seems appropriate
since trying elsewhere is not going to substantially increase the
odds of finding that domain.
Thanks,
- vijay
--
Vijay K. Gurbani, Bell Laboratories, Alcatel-Lucent
1960 Lucent Lane, Rm. 9C-533, Naperville, Illinois 60566 (USA)
Email: vkg@{bell-labs.com,acm.org} / [email protected]
Web: http://ect.bell-labs.com/who/vkg/
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